The act of being tricked into doing something tedious because you thought that you would be kind and go through with this act. However, the other person had no intention of actually doing the tedious act in the first place.

Mom: I will wash the dishes from dinner.

Yourself: No! I got this mom. Just sit and relax.

Mom: Thank you! *smirks*

Dad: OOOOO! You just got PUMP FAKED so bad, son! You have some learning to do!